Air treatment device



FIG. 1 is a bottom front right perspective view of the air treatment device;

FIG. 2 is a front view, in elevation, of the air treatment device, taken from the frame of reference of FIG. 1;

FIG. 3 is a rear view, in elevation, of the air treatment device, taken from the frame of reference of FIG. 1;

FIG. 4 is a right side view, in elevation, of the air treatment device, taken from the frame of reference of FIG. 1;

FIG. 5 is a left side view, in elevation, of the air treatment device, taken from the frame of reference of FIG. 1;

FIG. 6 is a top view of the air treatment device, taken from the frame of reference of FIG. 1;

FIG. 7 is a bottom view of the air treatment device, taken from the frame of reference of FIG. 1;

FIG. 8 is a bottom front left perspective view of the air treatment device; and,

FIG. 9 is a bottom rear right perspective view of the air treatment device. 

CLAIM The ornamental design for an air treatment device, as shown and described. 